From 0974f8487d1c09680d30d9ac208d1974f40318b8 Mon Sep 17 00:00:00 2001
From: Nicolas Pitre <nico@cam.org>
Date: Wed, 8 Feb 2006 21:19:37 +0000
Subject: [PATCH] --- yaml --- r: 20127 b: refs/heads/master c:
 49bca4c2815feafd5f999bf43baf87e0dd8d1d08 h: refs/heads/master i:   20125:
 42aee7bd4abc653211a80d0ad7d12ac963b72e55   20123:
 0b86e4ec96777539987476d15d82ed3f5fe219f0   20119:
 db716fc2cce874263a9880bd515eb66cdcebd371   20111:
 2867e30c075f55fc7b0b6d750604e326f13e3e49   20095:
 a6c425eb6568095bd8a1986de7d7d399c15824f7 v: v3

---
 [refs]                             |  2 +-
 trunk/arch/arm/kernel/entry-armv.S | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 4703b9da5227..0796bd64b8c1 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 99595d0237926b5aba1fe4c844a011a1ba1ee1f8
+refs/heads/master: 49bca4c2815feafd5f999bf43baf87e0dd8d1d08
diff --git a/trunk/arch/arm/kernel/entry-armv.S b/trunk/arch/arm/kernel/entry-armv.S
index d401d908c463..f248bbfe745f 100644
--- a/trunk/arch/arm/kernel/entry-armv.S
+++ b/trunk/arch/arm/kernel/entry-armv.S
@@ -333,9 +333,13 @@ __pabt_svc:
 					@ from the exception stack
 
 #if __LINUX_ARM_ARCH__ < 6 && !defined(CONFIG_NEEDS_SYSCALL_FOR_CMPXCHG)
+#ifndef CONFIG_MMU
+#warning "NPTL on non MMU needs fixing"
+#else
 	@ make sure our user space atomic helper is aborted
 	cmp	r2, #TASK_SIZE
 	bichs	r3, r3, #PSR_Z_BIT
+#endif
 #endif
 
 	@
@@ -756,12 +760,18 @@ __kuser_cmpxchg:				@ 0xffff0fc0
 	 * exception happening just after the str instruction which would
 	 * clear the Z flag although the exchange was done.
 	 */
+#ifdef CONFIG_MMU
 	teq	ip, ip			@ set Z flag
 	ldr	ip, [r2]		@ load current val
 	add	r3, r2, #1		@ prepare store ptr
 	teqeq	ip, r0			@ compare with oldval if still allowed
 	streq	r1, [r3, #-1]!		@ store newval if still allowed
 	subs	r0, r2, r3		@ if r2 == r3 the str occured
+#else
+#warning "NPTL on non MMU needs fixing"
+	mov	r0, #-1
+	adds	r0, r0, #0
+#endif
 	mov	pc, lr
 
 #else